Intubating Laryngeal Mask Airway

2002 ◽  
Vol 30 (5) ◽  
pp. 551-569 ◽  
Author(s):  
G. Caponas
Keyword(s):  
Laryngeal Mask Airway ◽  
Airway Management ◽  
Difficult Airway ◽  
Success Rate ◽  
Laryngeal Mask ◽  
Oesophageal Perforation ◽  
Clinical Consequence ◽  
Neutral Position ◽  
Valuable Adjunct ◽  
Intubating Laryngeal Mask Airway

The Intubating Laryngeal Mask Airway (ILMA) was introduced into clinical practice in 1997 following numerous clinical trials involving 1110 patients. The success rate of blind intubation via the device after two attempts is 88% in “routine” cases. Successful intubation in a variety of difficult airway scenarios, including awake intubation, has been described, with the overall success rate in the 377 patients reported being approximately 98%. The use of the ILMA by the novice operator has also been investigated with conflicting reports as to its suitability for emergency intubation in this setting.Blind versus visualized intubation techniques have also been investigated. These techniques may provide some benefits in improved safety and success rates, although the evidence is not definitive. The use of a visualizing technique is recommended, especially whilst experience with intubation via the ILMA is being gained. The risk of oesophageal intubation is reported as 5% and one death has been described secondary to the complications of oesophageal perforation during blind intubation. Morbidity described with the use of the ILMA includes sore throat, hoarse voice and epiglottic oedema. Haemodynamic changes associated with intubation via the ILMA are of minimal clinical consequence.The ILMA is a valuable adjunct to the airway management armamentarium, especially in cases of difficult airway management. Success with the device is more likely if the head of the patient is maintained in the neutral position, when the operator has practised at least 20 previous insertions and when the accompanying lubricated armoured tube is used.

Evaluation of Paramedic Utilization of the Intubating Laryngeal Mask Airway in High-Fidelity Simulated Critical Care Scenarios

2013 ◽  
Vol 28 (6) ◽  
pp. 630-631 ◽  
Author(s):  
Donald Byars ◽  
Bruce Lo ◽  
Jeff Yates
Keyword(s):  
Critical Care ◽  
Laryngeal Mask Airway ◽  
Difficult Airway ◽  
Success Rate ◽  
Airway Device ◽  
Prehospital Setting ◽  
Laryngeal Mask ◽  
Intubating Laryngeal Mask Airway ◽  
One Year ◽  
High Degree

AbstractIntroductionSuccessful oxygenation and ventilation can mean the difference between life and death in the prehospital setting. While airway challenges can be numerous within the confines of the emergency department, there are many additional confounding difficulties in the prehospital setting, which include limited access to equipment, poor lighting, extreme environments, limited personnel to assist, no immediate backup, and limited rescue airway options. The concept of an easy, reliable, and rapidly deployable alternative rescue airway device is critical, especially when considering the addition of rapid sequence intubation protocols in the prehospital setting.HypothesisThe primary objective of this study was to ascertain whether paramedics can be trained to deploy this alternative airway device with an acceptable success rate in a simulated critical care airway scenario. The secondary objective was to determine whether the previously-trained paramedics were able to retain their ability to deploy the device successfully at one year.MethodsThis was a prospective, observational, single-group, descriptive cohort, educational trial. Forty paramedics were trained in the use of the Intubating Laryngeal Mask Airway (I-LMA) in a simulation medicine curriculum culminating in a simulated critical care difficult airway scenario requiring urgent oxygenation and ventilation after failed traditional endotracheal intubation. An emergency medicine physician proctor determined successful airway management. Repeat testing was then performed at approximately one year out, challenging the medics to intubate a mannequin using the I-LMA during an unrelated training session.ResultsOf the 40 paramedics who underwent complete simulation training, 39 were able to intubate and ventilate the simulated difficult airway using the I-LMA during the critical care scenario. This yields a success rate of 97.5% (95% CI, 87.1%-99.4%). At approximately one year out, 35 out of 35 medics were able to intubate the mannequin using the I-LMA, resulting in a success rate of 100% (95% CI, 91.4%-100%).ConclusionsIn this study, paramedics were able to deploy the I-LMA with a high degree of success in a simulated difficult airway, with a high degree of skill retention at one year out.ByarsD, LoB, YatesJ. Evaluation of paramedic utilization of the Intubating Laryngeal Mask Airway in high-fidelity simulated critical care scenarios. Prehosp Disaster Med.2013;28(6):1-2.

Comparison of the Intubating Laryngeal Mask Airway with the Fiberoptic Intubation in Anticipated Difficult Airway Management

2001 ◽  
Vol 94 (6) ◽  
pp. 968-972 ◽  
Author(s):  
Olivier Langeron ◽  
François Semjen ◽  
Jean-Louis Bourgain ◽  
Alain Marsac ◽  
Anne-Marie Cros
Keyword(s):  
Laryngeal Mask Airway ◽  
Tracheal Intubation ◽  
Adverse Events ◽  
Oxygen Saturation ◽  
Difficult Airway ◽  
Difficult Intubation ◽  
Laryngeal Mask ◽  
Fiberoptic Intubation ◽  
Alternative Technique ◽  
Intubating Laryngeal Mask Airway

Background The intubating laryngeal mask airway (ILMA; Fastrach; Laryngeal Mask Company, Henley-on-Thames, UK) may provide an alternative technique to fiberoptic intubation (FIB) to facilitate the management of the anticipated difficult airway. The authors therefore compared the effectiveness of the ILMA with FIB in patients with anticipated difficult intubation. Methods One hundred patients, with at least one difficult intubation criteria (Mallampati class III or IV, thyromental distance < 65 mm, interincisor distance < 35 mm) were enrolled (FIB group, n = 49; ILMA group, n = 51) in this prospective randomized study. Anesthesia was induced with propofol and maintained with alfentanil and propofol after an efficient mask ventilation has been demonstrated. The success of the technique (within three attempts), the number of attempts, duration of the successful attempt, and adverse events (oxygen saturation < 90%, bleeding) were recorded. Results The rate of successful tracheal intubation with ILMA was 94% and comparable with FIB (92%). The number of attempts and the time to succeed were not significantly different between groups. In case of failure of the first technique, the alternative technique always succeeded. Failures in FIB group were related to oxygen desaturation (oxygen saturation < 90%) and bleeding, and to previous cervical radiotherapy in the ILMA group. Adverse events occurred significantly more frequently in FIB group than in ILMA group (18 vs. 0%, P < 0.05). Conclusion The authors obtained a high success rate and comparable duration of tracheal intubation with ILMA and FIB techniques. In patients with previous cervical radiotherapy, the use of ILMA cannot be recommended. Nevertheless, the use of the ILMA was associated with fewer adverse events.

Airway Management during Spaceflight

2000 ◽  
Vol 92 (5) ◽  
pp. 1237-1241 ◽  
Author(s):  
Christian Keller ◽  
Joseph Brimacombe ◽  
Marzia Giampalmo ◽  
Axel Kleinsasser ◽  
Alex Loeckinger ◽  
...  
Keyword(s):  
Laryngeal Mask Airway ◽  
Tracheal Intubation ◽  
Airway Management ◽  
Simulated Microgravity ◽  
Life Support ◽  
Laryngeal Mask ◽  
Scale Model ◽  
Experimental Conditions ◽  
Oropharyngeal Airway ◽  
Intubating Laryngeal Mask Airway

Background The authors compared airway management in normogravity and simulated microgravity with and without restraints for laryngoscope-guided tracheal intubation, the cuffed oropharyngeal airway, the standard laryngeal mask airway, and the intubating laryngeal mask airway. Methods Four trained anesthesiologist-divers participated in the study. Simulated microgravity during spaceflight was obtained using a submerged, full-scale model of the International Space Station Life Support Module and neutrally buoyant equipment and personnel. Customized, full-torso manikins were used for performing airway management. Each anesthesiologist-diver attempted airway management on 10 occasions with each device in three experimental conditions: (1) with the manikin at the poolside (poolside); (2) with the submerged manikin floating free (free-floating); and (3) with the submerged manikin fixed to the floor using a restraint (restrained). Airway management failure was defined as failed insertion after three attempts or inadequate device placement after insertion. Results For the laryngoscope-guided tracheal intubation, airway management failure occurred more frequently in the free-floating (85%) condition than the restrained (8%) and poolside (0%) conditions (both, P < 0.001). Airway management failure was similar among conditions for the cuffed oropharyngeal airway (poolside, 10%; free-floating, 15%; restrained, 15%), laryngeal mask airway (poolside, 0%; free-floating, 3%; restrained, 0%), and intubating laryngeal mask airway (poolside, 5%; free-floating, 5%; restrained, 10%). Airway management failure for the laryngoscope-guided tracheal intubation was usually caused by failed insertion (> 90%), and for the cuffed oropharyngeal airway, laryngeal mask airway, and intubating laryngeal mask airway, it was always a result of inadequate placement. Conclusion The emphasis placed on the use of restraints for conventional tracheal intubation in microgravity is appropriate. Extratracheal airway devices may be useful when restraints cannot be applied or intubation is difficult.

scholarly journals Pediatric Trainees Managing a Difficult Airway: Comparison of Laryngeal Mask Airway, Direct, and Video-Assisted Laryngoscopy

OTO Open ◽  
2017 ◽  
Vol 1 (2) ◽  
pp. 2473974X1770791 ◽  
Author(s):  
Art Ambrosio ◽  
Kastley Marvin ◽  
Colleen Perez ◽  
Chelsie Byrnes ◽  
Cory Gaconnet ◽  
...  
Keyword(s):  
Laryngeal Mask Airway ◽  
Airway Management ◽  
Difficult Airway ◽  
Direct Laryngoscopy ◽  
Training Session ◽  
Laryngeal Mask ◽  
Normal Infant ◽  
Difficult Airway Management ◽  
Video Assisted ◽  
Advanced Airway

Objective Difficult airway management is a key skill required by all pediatric physicians, yet training on multiple modalities is lacking. The objective of this study was to compare the rate of, and time to, successful advanced infant airway placement with direct laryngoscopy, video-assisted laryngoscopy, and laryngeal mask airway (LMA) in a difficult airway simulator. This study is the first to compare the success with 3 methods for difficult airway management among pediatric trainees. Study Design Randomized crossover pilot study. Setting Tertiary academic medical center. Methods Twenty-two pediatric residents, interns, and medical students were tested. Participants were provided 1 training session by faculty using a normal infant manikin. Subjects then performed all 3 of the aforementioned advanced airway modalities in a randomized order on a difficult airway model of a Robin sequence. Success was defined as confirmed endotracheal intubation or correct LMA placement by the testing instructor in ≤120 seconds. Results Direct laryngoscopy demonstrated a significantly higher placement success rate (77.3%) than video-assisted laryngoscopy (36.4%, P = .0117) and LMA (31.8%, P = .0039). Video-assisted laryngoscopy required a significantly longer amount of time during successful intubations (84.8 seconds; 95% CI, 59.4-110.1) versus direct laryngoscopy (44.9 seconds; 95% CI, 33.8-55.9) and LMA placement (36.6 seconds; 95% CI, 24.7-48.4). Conclusions Pediatric trainees demonstrated significantly higher success using direct laryngoscopy in a difficult airway simulator model. However, given the potential lifesaving implications of advanced airway adjuncts, including video-assisted laryngoscopy and LMA placement, more extensive training on adjunctive airway management techniques may be useful for trainees.

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